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Title: HIGH VOLTAGE ION SOURCE

Abstract

A device is described for providing a source of molecular ions having a large output current and with an accelerated energy of the order of 600 kv. Ions are produced in an ion source which is provided with a water-cooled source grid of metal to effect maximum recombination of atomic ions to molecular ions. A very high accelerating voltage is applied to withdraw and accelerate the molecular ions from the source, and means are provided for dumping the excess electrons at the lowest possible potentials. An accelerating grid is placed adjacent to the source grid and a slotted, grounded accelerating electrode is placed adjacent to the accelerating grid. A potential of about 35 kv is maintained between the source grid and accelerating grid, and a potential of about 600 kv is maintained between the accelerating grid and accelerating electrode. In order to keep at a minimum the large number of oscillating electrons which are created when such high voltages are employed in the vicinity of a strong magnetic field, a plurality of high voltage cascaded shields are employed with a conventional electron dumping system being employed between each shield so as to dump the electrons at the lowest possible potentialmore » rather than at 600 kv.« less

Inventors:
Issue Date:
OSTI Identifier:
4163872
Patent Number(s):
2933630
Assignee:
U.S. Atomic Energy Commission
Patent Classifications (CPCs):
G - PHYSICS G21 - NUCLEAR PHYSICS G21K - TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
NSA Number:
NSA-14-021762
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-60
Country of Publication:
United States
Language:
English
Subject:
ENGINEERING AND EQUIPMENT; ACCELERATION; ATOMS; COOLING; EFFICIENCY; ELECTRIC POTENTIAL; ELECTRODES; ELECTRONS; ENERGY; MAGNETIC FIELDS; MOLECULES; OSCILLATIONS; SHIELDING; WATER

Citation Formats

Luce, J S. HIGH VOLTAGE ION SOURCE. United States: N. p., 1960. Web.
Luce, J S. HIGH VOLTAGE ION SOURCE. United States.
Luce, J S. Tue . "HIGH VOLTAGE ION SOURCE". United States.
@article{osti_4163872,
title = {HIGH VOLTAGE ION SOURCE},
author = {Luce, J S},
abstractNote = {A device is described for providing a source of molecular ions having a large output current and with an accelerated energy of the order of 600 kv. Ions are produced in an ion source which is provided with a water-cooled source grid of metal to effect maximum recombination of atomic ions to molecular ions. A very high accelerating voltage is applied to withdraw and accelerate the molecular ions from the source, and means are provided for dumping the excess electrons at the lowest possible potentials. An accelerating grid is placed adjacent to the source grid and a slotted, grounded accelerating electrode is placed adjacent to the accelerating grid. A potential of about 35 kv is maintained between the source grid and accelerating grid, and a potential of about 600 kv is maintained between the accelerating grid and accelerating electrode. In order to keep at a minimum the large number of oscillating electrons which are created when such high voltages are employed in the vicinity of a strong magnetic field, a plurality of high voltage cascaded shields are employed with a conventional electron dumping system being employed between each shield so as to dump the electrons at the lowest possible potential rather than at 600 kv.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1960},
month = {4}
}